Camera Optical Lens

FIELD OF THE PRESENT DISCLOSURE

The present disclosure relates to optical lens, in particular to a camera optical lens suitable for handheld devices such as smart phones and digital cameras and imaging devices.

DESCRIPTION OF RELATED ART

With the emergence of smart phones in recent years, the demand for miniature camera lens is increasing day by day, but the photosensitive devices of general camera lens are no other than Charge Coupled Device (CCD) or Complementary metal-Oxide Semiconductor Sensor (CMOS sensor), and as the progress of the semiconductor manufacturing technology makes the pixel size of the photosensitive devices shrink, coupled with the current development trend of electronic products being that their functions should be better and their shape should be thin and small, miniature camera lens with good imaging quality therefor has become a mainstream in the market. In order to obtain better imaging quality, the lens that is traditionally equipped in mobile phone cameras adopts a three-piece or four-piece lens structure. And, with the development of technology and the increase of the diverse demands of users, and under this circumstances that the pixel area of photosensitive devices is shrinking steadily and the requirement of the system for the imaging quality is improving constantly, the five-piece, six-piece and seven-piece lens structure gradually appear in lens design. There is an urgent need for ultra-thin wide-angle camera lenses which have good optical characteristics and the chromatic aberration of which is fully corrected.

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the exemplary embodiments can be better understood with reference to the following drawings. The components in the drawing are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present disclosure.

FIG. 1 is a schematic diagram of a camera optical lens in accordance with a first embodiment of the present invention;

FIG. 2 shows the longitudinal aberration of the camera optical lens shown in FIG. 1;

FIG. 3 shows the lateral color of the camera optical lens shown in FIG. 1;

FIG. 4 presents a schematic diagram of the field curvature and distortion of the camera optical lens shown in FIG. 1;

FIG. 5 is a schematic diagram of a camera optical lens in accordance with a second embodiment of the present invention;

FIG. 6 presents the longitudinal aberration of the camera optical lens shown in FIG. 5;

FIG. 7 presents the lateral color of the camera optical lens shown in FIG. 5;

FIG. 8 presents the field curvature and distortion of the camera optical lens shown in FIG. 5;

FIG. 9 is a schematic diagram of a camera optical lens in accordance with a third embodiment of the present invention;

FIG. 10 presents the longitudinal aberration of the camera optical lens shown in FIG. 9;

FIG. 11 presents the lateral color of the camera optical lens shown in FIG. 9;

FIG. 12 presents the field curvature and distortion of the camera optical lens shown in FIG. 9.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

The present disclosure will hereinafter be described in detail with reference to several exemplary embodiments. To make the technical problems to be solved, technical solutions and beneficial effects of the present disclosure more apparent, the present disclosure is described in further detail together with the figure and the embodiments. It should be understood the specific embodiments described hereby is only to explain the disclosure, not intended to limit the disclosure.

Embodiment 1

As referring to FIG. 1, the present invention provides a camera optical lens 10. FIG. 1 shows the camera optical lens 10 of embodiment 1 of the present invention, the camera optical lens 10 comprises 7 lenses. Specifically, from the object side to the image side, the camera optical lens 10 comprises in sequence: an aperture S1, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7. Optical element like optical filter GF can be arranged between the seventh lens L7 and the image surface Si. The first lens L1 is made of glass material, the second lens L2 is made of plastic material, the third lens L3 is made of glass material, the fourth lens L4 is made of plastic material, the fifth lens L5 is made of plastic material, the sixth lens L6 is made of plastic material, the seventh lens L7 is made of plastic material;

Here, the focal length of the whole camera optical lens is defined as f, the focal length of the first lens L1 is defined as f1, the focal length of the third lens L3 is defined as f3, the focal length of the fourth lens L4 is defined as f4, the refractive power of the first lens L1 is defined as n1, the refractive power of the third lens L3 is defined as n3, the curvature radius of the object side surface of the seventh lens L7 is defined as R13, the curvature radius of the image side surface of the seventh lens L7 is defined as R14, they satisfy the following conditions: 1 custom-character f1/f1.5, 1.7n12.2, −2f3/f42; 0.5(R13+R14)/(R13−R14)10; 1.7n32.2.

Condition 1 custom-character f1/f1.5 fixes the positive refractive power of the first lens L1. If the lower limit of the set value is exceeded, although it benefits the ultra-thin development of lenses, but the positive refractive power of the first lens L1 will be too strong, problem like aberration is difficult to be corrected, and it is also unfavorable for wide-angle development of lens. On the contrary, if the higher limit of the set value is exceeded, the positive refractive power of the first lens L1 becomes too weak, it is then difficult to develop ultra-thin lenses. Preferably, the following condition shall be satisfied, 1.10 custom-character f1/f1.45.

Condition 1.7 custom-character n12.2 fixes the refractive power of the first lens L1, refractive power within this range benefits the ultra-thin development of lenses, and it also benefits the correction of aberration. Preferably, the following condition shall be satisfied, 1.72n11.98.

Condition −2 custom-character f3/f42 fixes the ratio between the focal length f3 of the third lens L3 and the focal length f4 of the fourth lens L4, a ratio within this range can effectively reduce the sensitivity of lens group used in camera and further enhance the imaging quality. Preferably, the following condition shall be satisfied, −1.94 custom-character f3/f40.33.

Condition −10 custom-character (R13+R14)/(R13−R14)10 fixes the shape of the seventh lens L7, when the value is beyond this range, with the development into the direction of ultra-thin and wide-angle lenses, problem like aberration of the off-axis picture angle is difficult to be corrected. Preferably, the following condition shall be satisfied, −4.56 custom-character (R13+R14)/(R13−R14)6.60.

Condition 1.7 custom-character n32.2 fixes the refractive power of the first lens L1, refractive power within this range benefits the ultra-thin development of lenses, and it also benefits the correction of aberration. Preferably, the following condition shall be satisfied, 1.74n32.0.

When the focal length of the camera optical lens 10 of the present invention, the focal length of each lens, the refractive power of the related lens, and the total optical length, the thickness on-axis and the curvature radius of the camera optical lens satisfy the above conditions, the camera optical lens 10 has the advantage of high performance and satisfies the design requirement of low TTL.

In this embodiment, the object side surface of the first lens L1 is a convex surface relative to the proximal axis, its image side surface is a concave surface relative to the proximal axis, and it has positive refractive power; the focal length of the whole camera optical lens is f, the focal length of the first lens L1 is f1, the curvature radius of the object side surface of the first lens L1 is R1, the curvature radius of the image side surface of the first lens L1 is R2 and the thickness on-axis of the first lens L1 is d1, they satisfy the following condition: −6.23 custom-character (R1+R2)/(R1−R2)−1.69, this condition reasonably controls the shape of the first lens, then the first lens can effectively correct the spherical aberration of the system; if the condition 0.30d10.94 is satisfied it is beneficial for the realization of ultra-thin lens. Preferably, the following condition shall be satisfied, −3.90 custom-character (R1+R2)/(R1−R2)−2.11; 0.49d10.75.

In this embodiment, the object side surface of the second lens L2 is a convex surface relative to the proximal axis, its image side surface is a concave surface relative to the proximal axis, and it has negative refractive power; the focal length of the whole camera optical lens 10 is f, the focal length of the second lens L2 is f2, the curvature radius of the object side surface of the second lens L2 is R3, the curvature radius of image side surface of the second lens L2 is R4 and the thickness on-axis of the second lens L2 is d3, they satisfy the following condition: when the condition −21.65 custom-character f2/f−3.36 is satisfied, the negative refractive power of the second lens L2 is controlled within reasonable scope, the spherical aberration caused by the first lens L1 which has positive refractive power and the field curvature of the system then can be reasonably and effectively balanced; the condition 3.35 custom-character (R3+R4)/(R3−R4)19.28 fixes the shape of the second lens L2, when value is beyond this range, with the development into the direction of ultra-thin and wide-angle lenses, problem like on-axis chromatic aberration is difficult to be corrected; if the condition 0.13d30.50 is satisfied, it is beneficial for the realization of ultra-thin lenses. Preferably, the following conditions shall be satisfied, −13.53 custom-character f2/f−4.20; 5.37(R3+R4)/(R3−R4)15.42; 0.20d30.40.

In this embodiment, the object side surface of the third lens L3 is a concave surface relative to the proximal axis, its image side surface is a convex surface relative to the proximal axis, and it has negative refractive power; the focal length of the whole camera optical lens 10 is f, the focal length of the third lens L3 is f3, the curvature radius of the object side surface of the third lens L3 is R5, the curvature radius of the image side surface of the third lens L3 is R6 and the thickness on-axis of the third lens L3 is d5, they satisfy the condition: −11.39 custom-character f3/f−2.90, by meeting this condition, it is helpful for the system to obtain good ability in balancing the field curvature, so that the image quality can be effectively improved; by meeting the condition −12.01(R5+R6)/(R5−R6)−3.25 the shape of the third lens L3 can be effectively controlled, it is beneficial for the shaping of the third lens L3 and bad shaping and stress generation due to extra large curvature of surface of the third lens L3 can be avoided; when the condition 0.10 custom-character d50.32 is satisfied, it is beneficial for the realization of ultra-thin lenses. Preferably, the following conditions shall be satisfied, −7.12f3/f−3.63; −7.51(R5+R6)/(R5−R6)−4.06; 0.17d50.26.

In this embodiment, the object side surface of the fourth lens L4 is a convex surface relative to the proximal axis, its image side surface is a convex surface relative to the proximal axis, and it has positive refractive power; the focal length of the whole camera optical lens 10 is f, the focal length of the fourth lens L4 is f4, the curvature radius of the object side surface of the fourth lens L4 is R7, the curvature radius of the image side surface of the fourth lens L4 is R8 and the thickness on-axis of the fourth lens L4 is d7, they satisfy the condition: 1.51 custom-character f4/f4.87, the appropriate distribution of refractive power makes it possible that the system has better imaging quality and lower sensitivity; the condition −0.73(R7+R8)/(R7−R8)−0.20 fixes the shape of the fourth lens L4, when beyond this range, with the development into the direction of ultra-thin and wide-angle lens, the problem like chromatic aberration is difficult to be corrected; when the condition 0.26 custom-character d70.80 is satisfied, it is beneficial for realization of ultra-thin lenses. Preferably, the following conditions shall be satisfied, 2.42f4/f3.89; −0.46(R7+R8)/(R7−R8)−0.25; 0.42d70.64.

In this embodiment, the object side surface of the fifth lens L5 is a concave surface relative to the proximal axis, its image side surface is a convex surface relative to the proximal axis, and it has positive refractive power; the focal length of the whole camera optical lens 10 is f, the focal length of the fifth lens L5 is f5, the curvature radius of the object side surface of the fifth lens L5 is R9, the curvature radius of the image side surface of the fifth lens L5 is R10 and the thickness on-axis of the fifth lens L5 is d9, they satisfy the condition: 0.31 custom-character f5/f0.95, the limitation on the fifth lens L5 can effectively make the light angle of the camera lens flat and the tolerance sensitivity reduces; the condition 0.53(R9+R10)/(R9−R10)1.67 fixes the shape of the fifth lens L5, when beyond this range, with the development into the direction of ultra-thin and wide-angle lens, the problem like off-axis chromatic aberration is difficult to be corrected; when the condition 0.40 custom-character d91.34 is satisfied, it is beneficial for the realization of ultra-thin lens. Preferably, the following conditions shall be satisfied, 0.50f5/f0.76, 0.85(R9+R10)/(R9−R10)1.33; 0.64d91.08.

In this embodiment, the object side surface of the sixth lens L6 is a concave surface relative to the proximal axis, its image side surface is a concave surface relative to the proximal axis, and it has negative refractive power; the focal length of the whole camera optical lens 10 is f, the focal length of the sixth lens L6 is f6, the curvature radius of the object side surface of the sixth lens L6 is R11, the curvature radius of the image side surface of the sixth lens L6 is R12 and the thickness on-axis of the sixth lens L6 is d11, they satisfy the condition: −5.46 custom-character f6/f−1.59, the appropriate distribution of refractive power makes it possible that the system has better imaging quality and lower sensitivity; the condition −1.86(R11+R12)/(R11−R12)−0.48 fixes the shape of the sixth lens L6, when beyond this range, with the development into the direction of ultra-thin and wide-angle lenses, the problem like off-axis chromatic aberration is difficult to be corrected; when the condition 0.17 custom-character d110.53, is satisfied, it is beneficial for the realization of ultra-thin lens. Preferably, the following conditions shall be satisfied, −3.41f6/f−1.99; −1.16(R11+R12)/(R11−R12)−0.60; 0.27d110.42.

In this embodiment, the object side surface of the seventh lens L7 is a concave surface relative to the proximal axis, its image side surface is a concave surface relative to the proximal axis, and it has negative refractive power; the focal length of the whole camera optical lens 10 is f, the focal length of the seventh lens L7 is f7 and the thickness on-axis of the seventh lens L7 is d13, they satisfy the condition −1.38 custom-character f7/f−0.45, appropriate distribution of refractive power makes it possible that the system has better imaging quality and lower sensitivity; when the condition 0.15d130.47 is satisfied, it is beneficial for the realization of ultra-thin lens. Preferably, the following conditions shall be satisfied, −0.86 custom-character f7/f0.24d130.37.

In this embodiment, the total optical length TTL of the camera optical lens 10 is less than or equal to 6.12 mm, it is beneficial for the realization of ultra-thin lenses. Preferably, the total optical length TTL of the camera optical lens 10 is less than or equal to 5.85.

In this embodiment, the aperture F number of the camera optical lens 10 is less than or equal to 2.36. A large aperture has better imaging performance. Preferably, the aperture F number of the camera optical lens 10 is less than or equal to 2.31.

With such design, the total optical length TTL of the whole camera optical lens 10 can be made as short as possible, thus the miniaturization characteristics can be maintained.

In the following, an example will be used to describe the camera optical lens 10 of the present invention. The symbols recorded in each example are as follows. The unit of distance, radius and center thickness is mm.

TTL: Optical length (the distance on-axis from the object side surface to the image surface of the first lens L1).

Preferably, inflexion points and/or arrest points can also be arranged on the object side surface and/or image side surface of the lens, so that the demand for high quality imaging can be satisfied, the description below can be referred for specific implementable scheme.

The design information of the camera optical lens 10 in the first embodiment of the present invention is shown in the following, the unit of the focal length, distance, radius and center thickness is mm.

The design information of the camera optical lens 10 in the first embodiment of the present invention is shown in the tables 1 and 2.

TABLE 1

R
d
nd
νd

S1
∞
d0 =
−0.274

R1
2.263
d1 =
0.625
nd1
1.7464
ν1
55.29

R2
5.224
d2 =
0.070

R3
4.303
d3 =
0.253
nd2
1.6510
ν2
21.51

R4
3.187
d4 =
0.461

R5
−4.919
d5 =
0.215
nd3
1.7726
ν3
21.72

R6
−6.884
d6 =
0.041

R7
9.967
d7 =
0.528
nd4
1.5441
ν4
56.12

R8
−20.224
d8 =
0.370

R9
−25.057
d9 =
0.896
nd5
1.5352
ν5
56.12

R10
−1.334
d10 =
0.033

R11
−6.459
d11 =
0.339
nd6
1.5855
ν6
29.91

R12
51.730
d12 =
0.392

R13
−6.332
d13 =
0.308
nd7
1.5352
ν7
56.12

R14
1.946
d14 =
0.500

R15
∞
d15 =
0.210
ndg
1.5168
νg
64.17

R16
∞
d16 =
0.246

In which, the meaning of the various symbols is as follows.

S1: Aperture;

R: The curvature radius of the optical surface, the central curvature radius in case of lens;

R1: The curvature radius of the object side surface of the first lens L1;

R2: The curvature radius of the image side surface of the first lens L1;

R3: The curvature radius of the object side surface of the secon lens L2;

R4: The curvature radius of the image side surface of the second lens L2;

R5: The curvature radius of the object side surface of the third lens L3;

R6: The curvature radius of the image side surface of the third lens L3;

R7: The curvature radius of the object side surface of the fourth lens L4;

R8: The curvature radius of the image side surface of the fourth lens L4;

R9: The curvature radius of the object side surface of the fifth lens L5;

R10: The curvature radius of the image side surface of the fifth lens L5;

R11: The curvature radius of the object side surface of the sixth lens L6;

R12: The curvature radius of the image side surface of the sixth lens L6;

R13: The curvature radius of the object side surface of the seventh lens L7;

R14: The curvature radius of the image side surface of the seventh lens L7;

R15: The curvature radius of the object side surface of the optical filter GF;

R16: The curvature radius of the image side surface of the optical filter GF;

d: The thickness on-axis of the lens and the distance on-axis between the lens;

d0: The distance on-axis from aperture S1 to the object side surface of the first lens L1;

d1: The thickness on-axis of the first lens L1;

d2: The distance on-axis from the image side surface of the first lens L1 to the object side surface of the second lens L2;

d3: The thickness on-axis of the second lens L2;

d4: The distance on-axis from the image side surface of the second lens L2 to the object side surface of the third lens L3;

d5: The thickness on-axis of the third lens L3;

d6: The distance on-axis from the image side surface of the third lens L3 to the object side surface of the fourth lens L4;

d7: The thickness on-axis of the fourth lens L4;

d8: The distance on-axis from the image side surface of the fourth lens L4 to the object side surface of the fifth lens L5;

d9: The thickness on-axis of the fifth lens L5;

d10: The distance on-axis from the image side surface of the fifth lens L5 to the object side surface of the sixth lens L6;

d11: The thickness on-axis of the sixth lens L6;

d12: The distance on-axis from the image side surface of the sixth lens L6 to the object side surface of the seventh lens L7;

d13: The thickness on-axis of the seventh lens L7;

d14: The distance on-axis from the image side surface of the seventh lens L7 to the object side surface of the optical filter GF;

d15: The thickness on-axis of the optical filter GF;

d16: The distance on-axis from the image side surface to the image surface of the optical filter GF;

nd: The refractive power of the d line;

nd1: The refractive power of the d line of the first lens L1;

nd2: The refractive power of the d line of the second lens L2;

nd3: The refractive power of the d line of the third lens L3;

nd4: The refractive power of the d line of the fourth lens L4;

nd5: The refractive power of the d line of the fifth lens L5;

nd6: The refractive power of the d line of the sixth lens L6;

nd7: The refractive power of the d line of the seventh lens L7;

ndg: The refractive power of the d line of the optical filter GF;

vd: The abbe number;

v1: The abbe number of the first lens L1;

v2: The abbe number of the second lens L2;

v3: The abbe number of the third lens L3;

v4: The abbe number of the fourth lens L4;

v5: The abbe number of the fifth lens L5;

v6: The abbe number of the sixth lens L6;

v7: The abbe number of the seventh lens L7;

vg: The abbe number of the optical filter GF;

Table 2 shows the aspherical surface data of the camera optical lens 10 in the embodiment 1 of the present invention.

TABLE 2

Conic Index
Aspherical Surface Index

k
A4
A6
A8
A10
A12
A14
A16

R1
−3.2889E−01
6.2454E−03
5.2381E−03
−1.5780E−03
7.2636E−04
5.7473E−04
−9.6262E−05
−4.2983E−06

R2
−5.7752E+01
6.9856E−03
−3.8395E−03
3.1158E−03
1.4144E−03
−1.1628E−03
3.2552E−04
4.0859E−04

R3
−3.1035E+01
−2.6165E−02
1.2540E−04
5.5366E−03
−2.8986E−03
2.1657E−03
5.4932E−04
−4.0283E−04

R4
−4.5073E+00
−7.3144E−03
−1.0400E−02
−2.9337E−04
−3.8800E−03
−2.4155E−03
−1.9251E−03
−2.3805E−04

R5
1.5256E+01
−2.0318E−02
−4.7213E−02
−2.6261E−02
2.7090E−03
4.1555E−03
−6.1994E−03
9.3860E−03

R6
2.7705E+01
−1.6404E−02
−3.8151E−02
−1.0721E−03
7.2121E−03
4.9236E−03
1.9907E−03
−6.3659E−04

R7
1.8788E+01
−5.5310E−02
1.3436E−02
3.4444E−03
7.3472E−05
−1.7111E−05
7.8397E−05
−7.9649E−06

R8
9.6656E+01
−6.6246E−02
3.3429E−03
8.2234E−04
−1.0199E−03
−3.3566E−04
1.9091E−04
2.2444E−04

R9
−1.0000E+02
−3.8586E−02
6.5210E−04
−4.8259E−05
−1.3747E−03
2.4660E−05
7.2587E−05
2.3079E−06

R10
−3.6579E+00
−3.8632E−02
1.7839E−02
−8.9130E−04
−4.2025E−04
−2.8141E−05
1.0115E−05
−8.5028E−07

R11
3.0671E+00
−1.7899E−02
1.0436E−03
5.2090E−04
−1.2829E−05
−4.4313E−05
−1.4079E−06
1.1797E−06

R12
−1.0000E+02
−6.7909E−03
−8.8157E−05
6.1860E−05
8.7837E−06
−9.6270E−07
−1.9407E−07
2.2628E−08

R13
1.4472E+00
−3.9584E−03
2.1521E−03
1.8363E−05
−1.3840E−05
−7.1761E−07
1.3466E−08
7.0568E−09

R14
−1.0158E+01
−2.5093E−02
3.9035E−03
−5.1647E−04
2.0524E−05
1.3945E−06
3.8667E−08
−1.4378E−08

Among them, K is a conic index, A4, A6, A8, A10, A12, A14, A16 are aspheric surface indexes.

IH: Image height

y=(x²/R)/[1+{1−(k+1)(x²/R²)}^1/2]+A4x⁴+A6x⁶+A8x⁸+A10x¹⁰+A12x¹²+A14x¹⁴+A16x¹⁶ (1)

For convenience, the aspheric surface of each lens surface uses the aspheric surfaces shown in the above condition (1). However, the present invention is not limited to the aspherical polynomials form shown in the condition (1).

Table 3 and table 4 show the inflexion points and the arrest point design data of the camera optical lens 10 lens in embodiment 1 of the present invention. In which, R1 and R2 represent respectively the object side surface and image side surface of the first lens L1, R3 and R4 represent respectively the object side surface and image side surface of the second lens L2, R5 and R6 represent respectively the object side surface and image side surface of the third lens L3, R7 and R8 represent respectively the object side surface and image side surface of the fourth lens L4, R9 and R10 represent respectively the object side surface and image side surface of the fifth lens L5, R11 and R12 represent respectively the object side surface and image side surface of the sixth lens L6, R13 and R14 represent respectively the object side surface and image side surface of the seventh lens L7. The data in the column named “inflexion point position” are the vertical distances from the inflexion points arranged on each lens surface to the optic axis of the camera optical lens 10. The data in the column named “arrest point position” are the vertical distances from the arrest points arranged on each lens surface to the optic axis of the camera optical lens 10.

TABLE 3

Inflexion point
Inflexion point
Inflexion point
Inflexion point

number
position 1
position 2
position 3

R1

R2

R3
2
0.635
0.945

R4
1
0.765

R5

R6
1
1.065

R7
2
0.435
0.945

R8
1
1.265

R9

R10
2
1.215
1.515

R11

R12
2
0.485
2.355

R13
3
1.505
2.595
2.905

R14
1
0.765

TABLE 4

Arrest

Arrest point number
Arrest point position 1
point position 2

R1

R2

R3

R4
1
1.045

R5

R6

R7
2
0.865
0.995

R8

R9

R10

R11

R12
1
0.835

R13
2
2.495
2.685

R14
1
1.725

FIG. 2 and FIG. 3 show the longitudinal aberration and lateral color schematic diagrams after light with a wavelength of 436 nm, 486 nm, 546 nm, 588 nm and 656 nm passes the camera optical lens 10 in the first embodiment. FIG. 4 shows the field curvature and distortion schematic diagrams after light with a wavelength of 546.1 nm passes the camera optical lens 10 in the first embodiment, the field curvature S in FIG. 4 is a field curvature in the sagittal direction, T is a field curvature in the meridian direction.

Table 13 shows the various values of the embodiments 1, 2, 3 and the values corresponding with the parameters which are already specified in the condition expressions.

As shown in Table 13, the first embodiment satisfies the various conditions.

In this embodiment, the pupil entering diameter of the camera optical lens is 2.287 mm, the full vision field image height is 3.475 mm, the vision field angle in the diagonal direction is 80.00°, it has wide-angle and is ultra-thin, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

Embodiment 2

Embodiment 2 is basically the same as embodiment 1, the meaning of its symbols is the same as that of embodiment 1, in the following, only the differences are described.

Table 5 and table 6 show the design data of the camera optical lens 20 in embodiment 2 of the present invention.

TABLE 5

R
d
nd
νd

S1
∞
d0 =
−0.266

R1
2.304
d1 =
0.623
nd1
1.7470
ν1
55.37

R2
4.857
d2 =
0.069

R3
4.065
d3 =
0.285
nd2
1.6510
ν2
21.51

R4
3.265
d4 =
0.460

R5
−4.849
d5 =
0.210
nd3
1.7976
ν3
22.68

R6
−6.946
d6 =
0.037

R7
10.023
d7 =
0.528
nd4
1.5441
ν4
56.12

R8
−21.605
d8 =
0.378

R9
−33.852
d9 =
0.860
nd5
1.5352
ν5
56.12

R10
−1.338
d10 =
0.040

R11
−6.737
d11 =
0.342
nd6
1.5855
ν6
29.91

R12
41.560
d12 =
0.408

R13
−6.358
d13 =
0.311
nd7
1.5352
ν7
56.12

R14
1.992
d14 =
0.500

R15
∞
d15 =
0.210
ndg
1.5168
νg
64.17

R16
∞
d16 =
0.257

Table 6 shows the aspherical surface data of each lens of the camera optical lens 20 in embodiment 2 of the present invention.

TABLE 6

Conic Index
Aspherical Surface Index

k
A4
A6
A8
A10
A12
A14
A16

R1
−3.4756E−01
5.9770E−03
5.0129E−03
−1.5523E−03
7.4733E−04
5.5604E−04
−1.2283E−04
−3.5839E−06

R2
−5.6681E+01
7.0091E−03
−4.1679E−03
2.9714E−03
1.4619E−03
−1.0514E−03
3.8858E−04
3.3604E−04

R3
−3.1825E+01
−2.6040E−02
4.3810E−04
5.4784E−03
−2.9038E−03
2.1631E−03
5.8110E−04
−3.3277E−04

R4
−4.7993E+00
−8.0153E−03
−1.0782E−02
−2.7367E−04
−3.5337E−03
−1.9397E−03
−1.6238E−03
−2.9614E−04

R5
1.5231E+01
−2.1352E−02
−4.6700E−02
−2.5889E−02
2.7269E−03
4.0399E−03
−6.2367E−03
9.6607E−03

R6
2.8022E+01
−1.6334E−02
−3.8672E−02
−1.3736E−03
7.0403E−03
4.7815E−03
1.8764E−03
−7.4854E−04

R7
1.8137E+01
−5.5474E−02
1.3385E−02
3.3996E−03
5.5316E−05
−2.0056E−05
7.9601E−05
−5.5123E−06

R8
1.0001E+02
−6.6638E−02
3.2764E−03
8.2110E−04
−1.0262E−03
−3.4201E−04
1.8754E−04
2.2177E−04

R9
−9.9813E+01
−3.7189E−02
9.9928E−04
−4.5182E−05
−1.3781E−03
2.4379E−05
6.9682E−05
1.9075E−06

R10
−3.5491E+00
−3.9787E−02
1.7747E−02
−9.2347E−04
−4.2460E−04
−2.8175E−05
1.0146E−05
−8.7590E−07

R11
2.8532E+00
−1.7974E−02
8.2291E−04
5.1536E−04
−1.5331E−05
−4.3646E−05
−1.0985E−06
1.2004E−06

R12
3.4524E+01
−6.7916E−03
−9.9331E−05
6.1281E−05
8.6937E−06
−9.7472E−07
−1.9539E−07
2.2370E−08

R13
1.3832E+00
−3.9051E−03
2.1603E−03
1.6283E−05
−1.3833E−05
−7.3331E−07
1.3796E−08
7.1689E−09

R14
−9.9321E+00
−2.5208E−02
3.9608E−03
−5.1545E−04
2.0140E−05
1.3711E−06
3.9084E−08
−1.3941E−08

Table 7 and table 8 show the inflexion points and the arrest point design data of the camera optical lens 20 lens in the second embodiment of the present invention.

TABLE 7

Inflexion

Inflexion point number
Inflexion point position 1
point position 2

R1

R2

R3
2
0.635
0.935

R4
1
0.765

R5

R6
1
1.075

R7
2
0.425
0.945

R8
1
1.275

R9

R10
2
1.275
1.455

R11

R12
2
0.545
2.415

R13
2
1.505
2.585

R14
1
0.775

TABLE 8

Arrest

Arrest point number
Arrest point position 1
point position 2

R1

R2

R3

R4
1
1.055

R5

R6

R7
2
0.845
1.025

R8

R9

R10

R11

R12
1
0.945

R13
2
2.465
2.695

R14
1
1.735

FIG. 6 and FIG. 7 show the longitudinal aberration and lateral color schematic diagrams after light with a wavelength of 436 nm, 486 nm, 546 nm, 588 nm and 656 nm passes the camera optical lens 20 in the second embodiment. FIG. 8 shows the field curvature and distortion schematic diagrams after light with a wavelength of 546.1 nm passes the camera optical lens 20 in the second embodiment.

As shown in Table 13, the second embodiment satisfies the various conditions.

In this embodiment, the pupil entering diameter of the camera optical lens is 2.287 mm, the full vision field image height is 3.475 mm, the vision field angle in the diagonal direction is 80.06°, it has wide-angle and is ultra-thin, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

Embodiment 3

Embodiment 3 is basically the same as embodiment 1, the meaning of its symbols is the same as that of embodiment 1, in the following, only the differences are described.

The design information of the camera optical lens 30 in the third embodiment of the present invention is shown in the tables 9 and 10.

TABLE 9

R
d
nd
νd

S1
∞
d0 =
−0.261

R1
2.341
d1 =
0.608
nd1
1.7525
ν1
50.71

R2
4.552
d2 =
0.053

R3
3.676
d3 =
0.333
nd2
1.6510
ν2
21.51

R4
3.146
d4 =
0.485

R5
−4.729
d5 =
0.210
nd3
1.8062
ν3
22.00

R6
−7.173
d6 =
0.037

R7
11.011
d7 =
0.533
nd4
1.5441
ν4
56.12

R8
−20.571
d8 =
0.405

R9
−48.476
d9 =
0.795
nd5
1.5352
ν5
56.12

R10
−1.342
d10 =
0.040

R11
−6.808
d11 =
0.350
nd6
1.5855
ν6
29.91

R12
185.009
d12 =
0.450

R13
−6.376
d13 =
0.299
nd7
1.5352
ν7
56.12

R14
2.013
d14 =
0.500

R15
∞
d15 =
0.210
ndg
1.5168
νg
64.17

R16
∞
d16 =
0.259

Table 10 shows the aspherical surface data of each lens of the camera optical lens 30 in embodiment 3 of the present invention.

TABLE 10

Conic Index
Aspherical Surface Index

k
A4
A6
A8
A10
A12
A14
A16

R1
−3.4604E−01
5.9971E−03
5.0618E−03
−1.3722E−03
6.6564E−04
3.0978E−04
−3.0181E−04
5.0848E−05

R2
−6.3705E+01
4.2665E−03
−6.3200E−03
1.8033E−03
1.0944E−03
−1.0727E−03
3.6286E−04
2.0211E−04

R3
−3.3720E+01
−2.7296E−02
−8.8211E−04
4.6497E−03
−3.1624E−03
2.5732E−03
1.1451E−03
−2.5775E−04

R4
−4.8223E+00
−7.5252E−03
−8.9913E−03
1.4179E−03
−2.5262E−03
−1.2421E−03
−7.7141E−04
8.8357E−04

R5
1.5114E+01
−2.4855E−02
−4.5949E−02
−2.5360E−02
3.1012E−03
3.9008E−03
−6.7320E−03
9.7622E−03

R6
2.8314E+01
−1.5301E−02
−3.9611E−02
−1.4482E−03
6.8787E−03
4.3857E−03
1.3925E−03
−1.1806E−03

R7
2.1387E+01
−5.4583E−02
1.3264E−02
2.9462E−03
−7.5525E−05
−8.7942E−06
9.6939E−05
−7.3568E−06

R8
1.0001E+02
−6.8847E−02
3.0055E−03
1.0166E−03
−9.2709E−04
−3.2822E−04
1.6740E−04
1.9969E−04

R9
−1.0004E+02
−3.5067E−02
1.4023E−03
4.8509E−05
−1.2720E−03
5.4086E−05
6.9831E−05
−3.8088E−06

R10
−3.4185E+00
−4.1084E−02
1.7731E−02
−9.7983E−04
−4.2731E−04
−2.1680E−05
1.2544E−05
−8.8554E−07

R11
2.2533E+00
−1.6323E−02
7.2944E−04
4.7318E−04
−1.6827E−05
−4.2137E−05
−2.9696E−07
1.4962E−06

R12
−1.0001E+02
−7.1921E−03
−7.7663E−05
5.8966E−05
8.3234E−06
−9.1777E−07
−1.6832E−07
2.7162E−08

R13
1.8016E+00
−5.1146E−03
2.1781E−03
2.5596E−05
−1.3687E−05
−7.7456E−07
5.7739E−09
7.0027E−09

R14
−9.5006E+00
−2.4795E−02
4.0368E−03
−5.2403E−04
2.0106E−05
1.3561E−06
3.4530E−08
−1.4284E−08

Table 11 and table 12 show the inflexion points and the arrest point design data of the camera optical lens 30 lens in embodiment 3 of the present invention.

TABLE 11

Inflexion

Inflexion point number
Inflexion point position 1
point position 2

R1

R2

R3
2
0.595
0.945

R4
1
0.825

R5

R6

R7
2
0.405
0.975

R8
1
1.285

R9

R10
2
1.335
1.445

R11
1
1.955

R12
2
0.255
2.195

R13
2
1.565
2.495

R14
1
0.785

TABLE 12

Arrest

Arrest point number
Arrest point position 1
point position 2

R1

R2

R3

R4

R5

R6

R7
2
0.765
1.105

R8

R9

R10

R11

R12
1
0.435

R13

R14
1
1.785

FIG. 10 and FIG. 11 show the longitudinal aberration and lateral color schematic diagrams after light with a wavelength of 436 nm, 486 nm, 546 nm, 588 nm and 656 nm passes the camera optical lens 30 in the third embodiment. FIG. 12 shows the field curvature and distortion schematic diagrams after light with a wavelength of 546.1 nm passes the camera optical lens 30 in the third embodiment.

The following table 13, in accordance with the above condition expressions, lists the values in this embodiment corresponding with each condition. Apparently, the camera optical system of this embodiment satisfies the above conditions.

In this embodiment, the pupil entering diameter of the camera optical lens is 2.287 mm, the full vision field image height is 3.475 mm, the vision field angle in the diagonal direction is 80.06°, it has wide-angle and is ultra-thin, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

TABLE 13

Embodiment
Embodiment

Embodiment 1
2
3

f
4.071
4.070
4.070

f1
4.884
5.288
5.697

f2
−20.515
−29.352
−44.065

f3
−23.180
−20.863
−17.716

f4
12.295
12.605
13.205

f5
2.587
2.569
2.553

f6
−9.709
−9.798
−11.120

f7
−2.734
−2.786
−2.812

f3/f4
−1.885
−1.655
−1.342

(R1 + R2)/(R1 − R2)
−2.528
−2.804
−3.116

(R3 + R4)/(R3 − R4)
6.710
9.162
12.853

(R5 + R6)/(R5 − R6)
−6.007
−5.625
−4.870

(R7 + R8)/(R7 − R8)
−0.340
−0.366
−0.303

(R9 + R10)/(R9 − R10)
1.112
1.082
1.057

(R11 + R12)/(R11 − R12)
−0.778
−0.721
−0.929

(R13 + R14)/(R13 − R14)
0.530
0.523
0.520

f1/f
1.200
1.299
1.400

f2/f
−5.039
−7.211
−10.826

f3/f
−5.693
−5.126
−4.352

f4/f
3.020
3.097
3.244

f5/f
0.636
0.631
0.627

f6/f
−2.385
−2.407
−2.732

f7/f
−0.672
−0.685
−0.691

d1
0.625
0.623
0.608

d3
0.253
0.285
0.333

d5
0.215
0.210
0.210

d7
0.528
0.528
0.533

d9
0.896
0.860
0.795

d11
0.339
0.342
0.350

d13
0.308
0.311
0.299

Fno
2.287
1.780
1.780

TTL
5.486
5.519
5.567

d7/TTL
0.096
0.096
0.096

n1
1.7464
1.7470
1.7525

n2
1.6510
1.6510
1.6510

n3
1.7726
1.7976
1.8062

n4
1.5441
1.5441
1.5441

n5
1.5352
1.5352
1.5352

n6
1.5855
1.5855
1.5855

n7
1.5352
1.5352
1.5352

It is to be understood, however, that even though numerous characteristics and advantages of the present exemplary embodiments have been set forth in the foregoing description, together with details of the structures and functions of the embodiments, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms where the appended claims are expressed.

Number	Date	Country	Kind
201710975225.2	Oct 2017	CN	national
201710975602.2	Oct 2017	CN	national

Camera Optical Lens

Information

Publication Number

Date Filed

Date Published

Inventors

Original Assignees

CPC

International Classifications

Abstract

Description

Claims

Priority Claims (2)